Carbid-cartridge.



rm. 702,594, Patented June I7, I902. E. M. ROSENBLUTH.

GARBID CARTRIDGE.

(Application filed Dec. 10, 1899.)

(No Model.)

2 Sheets-Sheet I.

WITNESSE T: NORRIS PETER$ c0, PHQYO-LITNO.,WASH1NGTON, n. c.

No. 702,594. Patented lune l7, I902;

E. m. ROSENBLUTH.

GARBID CARTRIDGE,

(Application filed Dec. 18, 1899.)

' (No Model.)

-2 Sheets-Sheet 2.

:THE "cams Penna co PNOTO-LITHO.. wAsmNcrroN. n, cy

NITED STAT S;

P TENT @FFICE.

EDWIN M. ROSENBLUTH, OF PHILADELPHIA, PENNSYLVANIA.

CARBID- C- ARTRIDG E.

SPECIFICATION forming part of Letters Patent No. 702,594, dated June 17,1902.

Original application filed February 4, 1899; Serial Nil- 704,482.Divided and this application filed December 18, 1899. Serial No. 740,652(No model.)

To all whont it may concern:

Be it known that I, EDWIN ML ROSENBLUTH,

This application comprises subject-matter divided from myapplicationfNo. 704.,82, dated February 4, 1899, and the presentinvention is particularly designed for use in connection withsmallacetylene-gas generators, such' as vehicle-lamps.

The cartridges hitherto provided for gen erators of the class specifiedare of two general types, thefirst comprising acarbid-inclosing shellhaving apertures for the admissionof moisture an'dfrangible means to temporarily seal said apertures, arranged so that when the seal isbrokenand 'the cartridge.

contents decomposed said shell cannot be recharged,'but is destroyed andwasted. The sec-- 0nd, of the ordinary forms of cartridges afore--said,con1prises a shell which is adapted to be repeatedly charged, butis so arranged as not to be at any time sealed. The first form ofcartridges aforesaid is advantageous in that'a. single. charge of carbidmay be preserved in readiness for immediate use. It is disadvantageous,however, in that the use of said single charge necessitates the loss ofthe- The second form of cartrldge aforesaid is more economical-.1 thanshell which incloses it.

said first form, but is inconvenient to use, inasmuch as the carbid mustbe preserved in a separate receptacle provided with means to excludeatmospheric air and moisture, for as soon as the cartridge is'chargedwith carbid the latter begins to decompose from exposure. Moreover, boththe frangible sealed cartridge and the unsealed cartridge aforesaidv areobjectionable in that their contents are maintained in a singlecompartment, and when moisture is admitted to a portion thereof all ofsaid contents areof necessity decomposed, whether required or not.

Thereforeit is theobject of my invention to provide a cartridge which isnot only arranged to be repeatedly charged, but is also provided withremovable and replaceable means, whereby it may be sealed and its con-Fig. 1. tridge-neck cap. Fig. 4isa perspective view of thediaphragm-retaining ring. Figs. 5 and .6 are. sectional views of acartridge, showing tents preserved when not in use. By such anarrangement certain advantages of both of the types of cartridgesaforesaid are socured. c

A further object of my invention is to provide a cartridge with aplurality of distinct compartment inclosed within an outer shell,adapted to be sealed, as aforesaid, and forming, in fact, a magazine ofseparate charges of carbid. The latter arrangement is obviouslyadvantageous in that only so much of the contents of a cartridge as arerequired for immediate use need be moistened and decomposed, theremainder thereof being preserved until required. Y

My invention comprehends means whereby .the aforesaid objects areattained,-means whereby separate compartments of the aforesaidmagazine-cartridge may beseparately charged with-carbid, and meanswhereby successive portions ofthe contents of such acartridge may beconveniently discharged when decomposed, as hereinafter moreparticularly set forth. 1 ,In the accompanying drawings, Figure 1' is acentral sectional view of a cartridge having two separate compartmentscharged with carbid. Fig. 2 is a fragmentary inverted plan view of theform of my invention shown in Fig. 3 is a sectional View of the carmeansfor separately charging respective com partments thereof. Fig. 7 is atop plan view -of-the hopper-cap shown in section in Fig. 5.

Fig. 8 is asectional view of a cartridge,showing modified details ofconstruction. Fig. 9 is a top plan view of the cartridge shown in Fig. 8minus its upper member. Fig. 10 isa sectional view-pf a cylindricalpartition as removed from the cartridge filled with decomposed carbid.Fig. llis a perspective view a of the cylindrical partition shown insection in Fig-10. Fig. 12 isa central-sectional view showing a modifiedform of cartridge.

In said figures, A istheoutershell-of the cartridge, comprisingtelescoping members a a and A are openings through which moisture may beadmitted to the cartridge. Said openings A are surroundedby necks a andare provided with porous diaphragms B, which extend across the same, andin the form of my invention shown in Figs. 1 and 8 comprise sheets orfilms of textile material secured in position by means of respectiveretaining-rings I). Said necked openings A are provided exterior to theporous diaphragms B with removable means to seal said necks a,preferably caps O, of the form shown in Figs. 1, 3, and 8, comprisingrecessed portions 0, which when in the position shown in said figuresserve to support said diaphragms l5 and prevent the displacement of thelatter by the jolting or expansion of the inclosed carbid.

Referring particularly to Figs. 1, 5, and 0, the cartridge-shell A isshown to be divided by the cylindrical partition D into two separatecarbid-containing compartments, whereof the inner circular compartmentis in registry with the openings A and the outer annular compartmentisexcluded from comm unication with said openings. The effect of thearrangement aforesaid is that the carbid within the partition D ismaintained in readiness for immediate generation of gas upon theadmission of moisture at either one of the openings A, and the carbid inthe compartment exterior to said partition D is reserved and preservedintact for subsequent use. The cubical capacity of th e two compartmentsof the cartridge is substantially the same, the supply of carbidreserved in the outer compartment beingsufficientto recharge the innercompartmentto thelevelindicatedin said Fig. 1, the space above thecharge beingallowed for the expansion incident to decomposition of thecarbid. Both of the openingsA being sealed by the caps (J, the carbidmaybe preserved in both the inner and outer compartments until requiredfor use. WVhen, however, it is desired to employ the cartridge in agas-generator,

one of said caps C is removed and the cartridge placed in operativerelation with a supply of moisture which percolates through theuncovered diaphragm B to within the inner compartment, and decompositionof the carbid contained therein of course ensues. As the carbid isdecomposed it becomes less pervious to moisture, and the evolution ofgas is somewhat retarded if moisture is admitted only upon one side ofthe carbid mass, so that although decomposition of the carbid may beeffected by the admission of moisture through an opening A at but oneend of the cartridge I find it convenient to provide openings A uponboth ends of the cartridge, so that the latter may be reversed and thecarbid in the central compartment thereof be thus decomposedsuccessively at its opposite ends with a substantially uniform evolutionof gas.

It may be here noted that the reversible arrangement of the cartridgeabove described is particularly advantageous in a vehiclelamp when it isdesired to illuminate the latter for a certain length of time, toextinguish it for an interval, and then to relight it, withcorresponding intermission in the generation of gas. If the carbidcontained in the cartridge is moistened at one end and the supply ofmoisture is cut off during the intermission aforesaid, some delay isexperienced in reestablishing the flow of moisture through thedecomposed carbid to the undecomposed carbid at the opposite extremityof the cartridge, and therefore considerable saving of time is effectedby having the second opening A at the opposite extremity of thecartridge, so that the undecomposed portion of its contents may beplaced in immediate connection with the supply of moisture and anevolution of gas sufiicient to illuminate the lamp at once secured.

In the form of my invention shown in Fig. 1 the separable telescopingmembers of the cartridge-shell are respectively provided with opposedseats a for the opposite extremities of the partition D to preventdisplacement of the latter. However, said seats maybe o1nitted, as shownin Figs. 5, 6, and 8, and the parts be maintained in proper relation byother means, such as the arms (1, the latter being preferably resilient.As shown in Figs. 1, 5, and 6, said arms (1 are connected by a band d,which encircles the partition D and is fixed thereto. It is obvious,however, that greater flexibility of the partition D may be secured byomitting said connecting-band d, and in Figs. 9, 10, and 11 I have shownsaid arms (1 as composed of cylindrical wires separately fixed upon saidpartition.

Both of the carbid-compartments of the cartridge-shell being empty, saidcompartments may be conveniently charged separately, as follows: Theupper member a of the cartridge-shell is removed; the hopper-cap E isfitted upon the lower member a thereof, as shown in Fig. 5; a quantityofcarbid 0c is measured in the upper member a of the cartridgeshell, andthe shell member a, together with the hopper E, is then inverted andfitted within the member a Tith the parts thusin the relation shown inFig. 5 the charge of carbid in the member a may be shaken into thecentral compartment, the continuous conical flange e of said cap Eserving to exclude the carbid from the outer compartment. The hopper-capF being then substituted for the cap E, as shown in Fig. 6, apredetermined quantity of carbid X is deposited from the member a withinthe outer compartment,the circular central portion fof the cap F,connected with the vertical flange thereof by the radial arms f, servingto exclude the carbid from the inner compartment. Thereupon the uppermember a of the shell A is placed in position, as shown in Fig. 1.Neck-caps G are fitted to both of the necks a and the cartridge therebysealed until required. When the carbid in the inner compartment of thecartridge has been decomposed by the admission of moisture thereto,following the removal of the sealing-cap C, the contents of saidinnercomin removable relation with the cartridge, so that it may be bodilyremoved, as shown in Fig. 10, together with its decomposed contents,and'the latter be ejected,-as shown in Fig. 11. I find that theoperation of ejecting the decomposed carbid, which is of putty-likeconsistency, is facilitated if the partition D is flexible orsusceptible of slight deformation in the hands of the operator. Thewithdrawal of the partition D and its caked refuse contents of coursepermits the reserve carbid X from the outer compartment to gravitate tothe bottom of the cartridge member a, and in order that the emptiedcylinder D may be conveniently recharged therewith I find it convenientto manipulate the parts as follows: The emptied cylinder D,.being openat both ends, as shown in Figs. 10 and 11, the cartridge member a isslipped upon one end thereof in engagement with the spring-arms d andthe cylinder D upturned as a cup-like receptacle, having said member aas its bottom. The reserve supplyof carbid being then poured thereinfrom the member a when the member a is refitted within the member a thecartridge is ready for operation with the outer compartment empty andthe inner compartment recharged with the carbid therefrom. The reservecharge of carbid being thus placed in position for immediate use may beconsumed from either end through the respective openings A, as abovedescribed, and

upon being decomposed may be removed, to-

gether with said partition D, as previously described and illustrated inFigs. 10 and 11.

I prefer to form the diaphragms Bof textile material, such as ordinarycotton cloth, and to extend each of said diaphragms from side to side ofits respective opening A by means of a split ring b (best shown in Fig.4,) said ring being seated within the neck a, surrounding said opening,as shown in the several figures. However, as shown in Fig. 12, saiddiaphragms B may consist of comparatively rigid porous material, such asblottingpaper, maintained in position by contact with the sides of thecartridge-shell and resting upon corrugations a in the end walls of thelatter.

As shown in Fig. 12,- the necked openings in the cartridge-shell may besimply sealed by means of removable plugs G, of material such as cork. Iprefer, however, to employ the caps 0, (shown in the other figures ofthe drawings,) for the reason that they may be more convenientlymanipulated. It is to be noted that the parts are so related that therecessed portion 0 of the cap 0 serves to support and protect thediaphragm B when the cap is in position to seal the opening A, so

that accidental displacement 'or rupture of the diaphragms Bis therebyvprevented.

Although the respective telescoping members of the cartridge-shell A maybe retained in proper relation merely by frictional engagement of theiroverlapping portions,I find it convenient under some circumstances toprovide means to positively engage the same' such,for instance,as thebayonet-jointshown in Figs. 8 and 9,-wherein a indicates recesses in oneof said members adapted to engage lugs 0. upon the other of'saidmembers.

Iam aware that is not broadly new to Ironder a carbid-cartridgereversible with respect to a gas-generator by the provision of aperturesfor the ingress of moisture at opposite ends of the cartridge. I believeit to be new, however, to construct and arrange a carbidcartridge asherein set forth, and therefore donot desire to limit myself to theprecise details of construction'which I have shown and described, as itis obvious that various modifications may be made therein withoutdeparting from the spirit of my invention.

I claim 1. A carbid-cartridge, comprising an outer shell, a removablepartition, forming separate carbid-compartments within said shell, andmeans arranged to retain said partition in normal relation with saidshell, substantially as set forth.

2. A carbid-cartridge, comprising an outer shell, a removable partition,forming separate carbid-compartments within said shell, and removablemeans arranged to retain said partition in normal relation with saidshell, substantially as set forth.

3. A carbid-cartridge, comprising an outer shell, a removable partition,forming separate carbid-compartments within said shell, and resilientmeans arranged to retain said partition in normal relation with saidshell, substantially as set forth.

4. A carbid-cartridge, comprising an outer cylindrical shell, aremovable cylindrical par tition, forming separate carbid-containingcompartments within said shell, and resilient means, attachedto saidpartition, arranged to maintain the same in normal relation with.

said shell, substantially as setforth.

5. A carbid-cartridge, comprising an outer I I cylindrical shell, aremovable cylindrical partition, forming separateconcentric'carbidcontaining compartments within said shell, andresilient means, attached to said partition, arranged to normallymaintain the same in concentric relation with said shell,sub

stantially asset forth.

6. A carbid-cartridge,comprising an outer shell, formed of separable.telescoping mem- I bers, opposed seats in said respective members, apartition fitted at its opposite extremities to said seats and arrangedto form a plurality of compartments within saidshelhan opening in saidshell in communicationwith one of said compartments,a porous diaphragm &

extending across said opening, and removable means to seal said opening,substantially as set forth.

7. A carbid-cartridge, comprising an outer shell, an openingin saidshell provided with a neck, corrugations in said shell, adjoining saidneck, a porous diaphragm resting upon said corrugations, and extendingacross said neck, and removable means to seal said neck, substantiallyas set forth.

8. In a carbid cartridge, comprising an outer shell; inclosing aplurality of compartments; a hopper fitted concentrically to said shelland arranged to deliver carbid to a predetermined one of saidcompartments, substantially as set forth.

9. In a carbid cartridge, comprising an outer shell; an opening in saidshell provided With a neck in integral relation with said shell; aporous diaphragm secured across said neck; a removable cap arranged toseal said neck exterior to said diaphragm; and a recessed portion ofsaid cap, arranged to support said diaphragm, substantially as setforth.

10. In a reversible oarbid-cartridge, comprising an outer shell;openings in opposite extremities of said shell respectively providedWith necks in integral relation with said shell; a partitionintermediate of the necked extremities of said shell; and removablemeans to seal said necks, substantially as set forth.

EDWIN M. ROSENBLUTH.

Vitnesses:

HENRY N. CONARD, ARTHUR E. PAIGE.

